From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C32FAC76196 for ; Mon, 3 Apr 2023 14:15:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232888AbjDCOPC (ORCPT ); Mon, 3 Apr 2023 10:15:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232889AbjDCOPB (ORCPT ); Mon, 3 Apr 2023 10:15:01 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D29751DF99 for ; Mon, 3 Apr 2023 07:15:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 670BF61CAF for ; Mon, 3 Apr 2023 14:15:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 73117C433EF; Mon, 3 Apr 2023 14:14:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680531299; bh=5/2/f7vdjW7G2QSK/N5uqSEGsX7vs6bAfBeQIAfa11g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kc9cx1z+e7GmZPMSUnNt/iOUe5PvzsEchG4hwOpvymojGLopwo9JL9xMTuF7hi5PC gMQBiDj53hCrW2ika3t4PmCe4/GrVYUlRnK96EeAQ1YAOwi8rx46Y5PR7NuNXfqYdm cLeLh0JtHJvR3l7qSIs6JCC/13FgOpoOd+ZaFyBA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Daniil Tatianin , Michal Swiatkowski , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 11/84] qed/qed_sriov: guard against NULL derefs from qed_iov_get_vf_info Date: Mon, 3 Apr 2023 16:08:12 +0200 Message-Id: <20230403140353.777639690@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230403140353.406927418@linuxfoundation.org> References: <20230403140353.406927418@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Daniil Tatianin [ Upstream commit 25143b6a01d0cc5319edd3de22ffa2578b045550 ] We have to make sure that the info returned by the helper is valid before using it. Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool. Fixes: f990c82c385b ("qed*: Add support for ndo_set_vf_trust") Fixes: 733def6a04bf ("qed*: IOV link control") Signed-off-by: Daniil Tatianin Reviewed-by: Michal Swiatkowski Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/qlogic/qed/qed_sriov.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c index 402c1c3d84ce2..5c8eaded6b30d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c +++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c @@ -4403,6 +4403,9 @@ qed_iov_configure_min_tx_rate(struct qed_dev *cdev, int vfid, u32 rate) } vf = qed_iov_get_vf_info(QED_LEADING_HWFN(cdev), (u16)vfid, true); + if (!vf) + return -EINVAL; + vport_id = vf->vport_id; return qed_configure_vport_wfq(cdev, vport_id, rate); @@ -5142,7 +5145,7 @@ static void qed_iov_handle_trust_change(struct qed_hwfn *hwfn) /* Validate that the VF has a configured vport */ vf = qed_iov_get_vf_info(hwfn, i, true); - if (!vf->vport_instance) + if (!vf || !vf->vport_instance) continue; memset(¶ms, 0, sizeof(params)); -- 2.39.2